[Intel-gfx] [PATCH] drm/i915/bxt: Added identifier for MIPI transcoder.

[Jani Nikula]

On Wed, 03 Feb 2016, Animesh Manna <animesh.manna at intel.com> wrote:
> Changes done:
> - Added identifier for Mipi transcoder A and C.
> - Added power domain identifier for newly added mipi trancoder.
> - Initialized transcoder for mipi during compute config.

Please separate the power domain control from the addition of the
transcoders. I think the former is safer to go in.

BR,
Jani.


>
> v1: Initial RFC version.
>
> v2: Rebased on tot.
>
> Cc: Jani Nikula <jani.nikula at intel.com>
> Signed-off-by: Animesh Manna <animesh.manna at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_drv.h         | 4 ++++
>  drivers/gpu/drm/i915/intel_dsi.c        | 8 ++++++++
>  drivers/gpu/drm/i915/intel_runtime_pm.c | 6 ++++++
>  3 files changed, 18 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 65a2cd0..c484df8 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -122,6 +122,8 @@ enum transcoder {
>  	TRANSCODER_B,
>  	TRANSCODER_C,
>  	TRANSCODER_EDP,
> +	TRANSCODER_MIPI_A,
> +	TRANSCODER_MIPI_C,
>  	I915_MAX_TRANSCODERS
>  };
>  #define transcoder_name(t) ((t) + 'A')
> @@ -176,6 +178,8 @@ enum intel_display_power_domain {
>  	POWER_DOMAIN_TRANSCODER_B,
>  	POWER_DOMAIN_TRANSCODER_C,
>  	POWER_DOMAIN_TRANSCODER_EDP,
> +	POWER_DOMAIN_TRANSCODER_MIPI_A,
> +	POWER_DOMAIN_TRANSCODER_MIPI_C,
>  	POWER_DOMAIN_PORT_DDI_A_LANES,
>  	POWER_DOMAIN_PORT_DDI_B_LANES,
>  	POWER_DOMAIN_PORT_DDI_C_LANES,
> diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
> index 91cef35..4f2b513 100644
> --- a/drivers/gpu/drm/i915/intel_dsi.c
> +++ b/drivers/gpu/drm/i915/intel_dsi.c
> @@ -273,6 +273,7 @@ static bool intel_dsi_compute_config(struct intel_encoder *encoder,
>  	struct intel_connector *intel_connector = intel_dsi->attached_connector;
>  	struct drm_display_mode *fixed_mode = intel_connector->panel.fixed_mode;
>  	struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
> +	struct drm_device *dev = intel_connector->base.dev;
>  
>  	DRM_DEBUG_KMS("\n");
>  
> @@ -284,6 +285,13 @@ static bool intel_dsi_compute_config(struct intel_encoder *encoder,
>  	/* DSI uses short packets for sync events, so clear mode flags for DSI */
>  	adjusted_mode->flags = 0;
>  
> +	if (IS_BROXTON(dev)) {
> +		if (intel_dsi->ports & (1 << PORT_A))
> +			pipe_config->cpu_transcoder = TRANSCODER_MIPI_A;
> +		else
> +			pipe_config->cpu_transcoder = TRANSCODER_MIPI_C;
> +	}
> +
>  	return true;
>  }
>  
> diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
> index bbca527..611dc1e 100644
> --- a/drivers/gpu/drm/i915/intel_runtime_pm.c
> +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
> @@ -87,6 +87,10 @@ intel_display_power_domain_str(enum intel_display_power_domain domain)
>  		return "TRANSCODER_B";
>  	case POWER_DOMAIN_TRANSCODER_C:
>  		return "TRANSCODER_C";
> +	case POWER_DOMAIN_TRANSCODER_MIPI_A:
> +		return "TRANSCODER_MIPI_A";
> +	case POWER_DOMAIN_TRANSCODER_MIPI_C:
> +		return "TRANSCODER_MIPI_C";
>  	case POWER_DOMAIN_TRANSCODER_EDP:
>  		return "TRANSCODER_EDP";
>  	case POWER_DOMAIN_PORT_DDI_A_LANES:
> @@ -403,6 +407,8 @@ static void hsw_set_power_well(struct drm_i915_private *dev_priv,
>  	BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS |		\
>  	BIT(POWER_DOMAIN_PIPE_A) |			\
>  	BIT(POWER_DOMAIN_TRANSCODER_EDP) |		\
> +	BIT(POWER_DOMAIN_TRANSCODER_MIPI_A) |		\
> +	BIT(POWER_DOMAIN_TRANSCODER_MIPI_C) |		\
>  	BIT(POWER_DOMAIN_PIPE_A_PANEL_FITTER) |		\
>  	BIT(POWER_DOMAIN_PORT_DDI_A_LANES) |		\
>  	BIT(POWER_DOMAIN_AUX_A) |			\

-- 
Jani Nikula, Intel Open Source Technology Center